Interlocking Scheme for Inspection Operations in FAO Vehicle Base

Objective Unlike traditional signal control ownership with manual operation vehicle bases, under FAO (fully automatic operation) conditions, signal control for unmanned zones in the vehicle base during vehicle entry is entirely managed by OCC (operations control center). To achieve paperless and digitalized operation-maintenance under FAO conditions, it is necessary to redesign the personnel protection system switch box scheme. Considering the characteristics of multi-system and complex interfaces in metro vehicle base, scheme design is also carried out for interlocking conditions between personnel protection system with other systems, to achieve full-process logical control from vehicle entering vehicle base automated operation zone, to entering garage, until inspection completion. Method Based on FAO operational scenarios, scheme design is carried out for the interlocking control concerning maintenance zoning in parking inspection garage, the interlocking logic of maintenance personnel protection system, the train inspection personnel trajectory and safety interlocking system, high-voltage protection system. Result & Conclusion According to the functional characteristics of the personnel protection system, the system switch box is intelligently transformed, adding travel switches and limit switches to complete the interlocking control of personnel protection switches, maintenance processes, and vehicle signals. By planning the maintenance personnel trajectory and setting up intelligent access control system, the layout of intelligent card issuance cabinets is completed to achieve logic interlocking control with the personnel protection system. Through the division of protection areas and protection authority tasks between the personnel protection system and the ′five prevention′ system, a logic control scheme design is completed between the two systems.